Method of and apparatus for removing coagulated lumps or the like from the dies of extrusion-presses.



E. LITTTMANNL METHOD OF AND APPARATUS FOR REMOVING GOAGULATED LUMPS ORTHE LIKE FROM THE DIES 0F EXIjRUSIdN PRESSES.

APPLIGATION FILED JULY 15, 1909.

56,386, I Patented Apr. 26, 1910.

ANDREW M. GRANAM co, PNOTD-LITNOGRAPIIERS wAsmNroN. all

UNITED STATES PATENT OFFICE.

ERNST L'O'TTMANN, OF BRESLAU, GERMANY.

METHOD OF AND APPARATUS FOR REMOVING COAGULATED LUMPS OR THE LIKE FROMTHE DIES OF EXTRUSION-PRESSES.

To all whom it may concern:

Be it known that I, ERNST Lt'IT'rMANN, a subject of the Emperor ofGermany, residing at Breslau, Germany, have invented certain new anduseful Improvements in Methods of and Apparatus for Removing CoagulatedLumps or the Like from the Dies of Extrusion-Presses, of which thefollowing is a specification.

This invention relates tomethods of and apparatus for removing from thedies of extrusion presses the coagulated lumps or other solid bodieswhich become fixed in the corners thereof, and interfere with thedischarge of the stream of material.

It comprehends, essentially, the production of a die for a press of thetype specified formed with openings through which devices may beinserted for the purpose of dislodging the lumps or similar bodies andforcing the same into the moving stream of material, whence they aredischarged through the opening or mouth of the die.

A structural embodiment of the invention is illustrated. in theaccompanying drawing, wherein the figure is a transverse sectional viewof the improved die.

The die a shown in said figure is formed with a plurality of openings 6suitably arranged in its corners, where the lumps or bodies usuallylodge. These openings are normally closed in any desired manner. If, inthe course of the pressing, the stream of clay or other material issuesfrom the die with roughened or mutilated edges, the openings areuncovered and devices are inserted therethrough so as to engage thelumps or bodies and force them into the stream. Such devices may be inthe form of rods, or they may, as illustrated, be constituted by pins 0which act in the manner of plungers or pistons. After having been movedinwardly through the openings, the pins will be returned to their normalposition by the pressure of the moving stream.

Specification of Letters Patent.

Application filed July 15, 1909.

Patented Apr. 26, 1910.

Serial No. 507,815.

Where the lumps are unusually large, they can be broken up by means ofsharpened rods or similar devices which are inserted through openings 6.The pins or other dislodging devices may then be operated in the mannerabove described, if found necessary, to force the fragments of suchlumps and the smaller lumps into the stream.

I claim as my invention:

1. The method of removing coagulated lumps or the like from the die ofan extrusion press which consists in dislodging the lumps from theportions of the die whereon they have become fixed, and forcing saidlumps into the moving stream of material passing through the die.

2. The method of removing coagulated lumps or the like from the die ofan extrusion press which consists in dislodging the lumps from theportions of the die whereon they have become fixed, breaking up thelarger lumps, and forcing the smaller lumps and the fragments of thelarger lumps into the moving stream of material passing through the die.

3. The method of removing coagulated lumps or the like from the die ofan extrusion press which consists in inserting devices through openingsin the die to engage the lumps and force the same into the moving streamof material passing through the die.

4. The combination, with an extrusion press die having a plurality ofopenings formed therein, of members movable in said openings into theinterior of the die, for dislodging the lumps fixed therein and forcingthe same into the moving stream of material passing through the die.

In witness whereof I have signed this specification in the presence oftwo witnesses.

ERNST KATZ, ERNsT BLEISH.

